Circular-knitting machine



(No Model.) F. L. DOW. CIRCULAR KNITTING MACHINE.

N0. 421,915. Patented Feb. 25, 1890.

III?! the cams therein that the needle-hooks will UNITED STATES PATENT OrEIcE.

FRANK L. DOW, OF ROCHESTER, NE\V YORK, ASSIGNOR TO JAMES L. BRANSON, OF PHILADELPHIA, PENNSYLVANIA.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 421,915, dated February 25, 1899.

Application filed January 21, 1889. Serial No. 297,008x (No model.)

sides of the cam and needle cylinders. Fig.

3 is a perspective view of the check-plate detached. Fig. 4C is an end view thereof and of its supporting-arms.

The object of this invention is to provide a means whereby to limit the upward throw or movement of knitting machine needles upon their disengagement from the actuating-cams when the stitch is completed,

The invention consists in the combination, with the cam-cylinder, of an inwardly-projecting arm or plate of novel construction secured to said cylinder with such relation to strike against the under side of said arm or plate, and the needles be thereby checked in their upward movement should they be thrown unduly high from the cams upon the completion of the stitch.

It consists, also, in means whereby said arm or plate may be readily thrown from the path of the needles to enable the latter, or a portion thereof, to be raised or moved out of action with the cams during the operation of fggrming the heel and toe parts of a stocking,

cl i

It consists, also, in making said arm or plate adjustable vertically, whereby it may be arranged to accommodate needles of various lengths, or for other purposes, as occasion may require.

It consists, also, in details which will be hereinafter pointed out.

Referring to the annexed drawings, A rep resents the cam-cylinder of a knittingqnachine, a being the cams therein, and 0, the needle rest,

B represents the j Limp-check attachment,

whose construction and operation are as follows: b is a vertical armor post, which is secured by screws or other means to the exterior of the cylinder A, adjacent to the summit of the lower cam-incline a per end of this arm or post at 00 is pivoted an arm b against whose lower end N, which is cam-shaped, as seen, bears a flat spring 12 for a purpose hereinafter explained. To the upper end of arm 11 is secured, by a screw 'y or other device, one limb b of an angular plate I), the other or horizontal limb b there of extending over the edge of the canrcylinder at a point slightly above the hooks a of the needles N when the latter are in contact with the needlerest;

From the foregoingdesoribed construction it will be seen that as the camcylinder rapidly rotates if the needles be thrown unduly high from the cams upon completion of the stitch the needle-hooks n will strike against the under side of the limb b and the needles be thereby checked in their upward movement. The arm 12*, to which the limb b is secured, being pivoted to the post 2), as de scribed, may be readily thrown out of the path of the needles when a portion of the latter are raised out of action with the cams during the operation of forming the heel and toe parts of the stocking, the, and the spring 6 bearing against the cam-shaped end of said arm tends to hold the latter in its idle and active positions, as more clearly shown in Fig, 2. The screw hole b in the limb b is elongated, whereby the plate may be adjusted vertically when required to suit needles of different lengths or for other purposes. The

edge of the plate 12 adjacent to the cams is turned up as seen, in order to deflect the needles downward if they shall happen to strike against said edge.

Having thus described my invention, I claim as new and wish to secure by Letters Patent- 1, In a knitting-machine, the combination, with the cam-cylinder, of the check-plate connected therewith with such relation to the ncedle=actuating cams as to extend over and above the needle-hooks when the needles are thrown from the cams upon completion of the stitch, substantially as described.

2. In a knitting-machine, the combination, with the cam-cylinder, of the check-plate connected therewith with such relation to the needle-actuating cams as to extend over and above the needle-hooks when the needles are thrown from the cams upon completion of the stitch, and provided with the inclined or upturned edge, substantially as described.

3. The combination, with a knitting-machine cam-cylinder, of the vertical post attached thereto and the check-plate connected with said post with such relation to the needie-actuating cams as to extend over and above the needle-hooks when the needles are thrown from the cams upon completion of the stitch, substantially as described.

4. In a knitting-machine, the combination,

with the cam-cylinder, of the post I), the pivoted arm b the check-plate on the upper end of said arm, and the spring, substantially as described. 7

5. The combination, with a knitting-machine cam-cylinder, of the post I), the pivoted arm 17*, the angular plate 19 provided with the screw-slot 29 its screw 1 and the spring, substantially as described.

In testimony whereof I have hereunto affixed my signature this 31st day of December, A. D. 1888.

FRANK L. DOW.

Witnesses:

G. W. OSBURN, W. H. ALMY. 

